Feature request: 16b output

[Pizzanomicon]

I believe depth maps are stored in more than 8b from an iPhone, I'm able to see a far less quantized depth map when using Focos (though still unable to output said depth map at that bitdepth), I believe adding libtiff support and allowing for 16bit output would greatly improve the usability of this already exceptional library.

Is 16b image output on the roadmap?

Thank you for all your work on this.